3620723328 has 192 divisors, whose sum is σ = 10993600800. Its totient is φ = 1185850368.

The previous prime is 3620723317. The next prime is 3620723329. The reversal of 3620723328 is 8233270263.

It is a happy number.

3620723328 is a `hidden beast` number, since 3 + 620 + 7 + 2 + 3 + 3 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3620723292 and 3620723301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620723329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1834150 + ... + 1836122.

Almost surely, 2^3620723328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3620723328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5496800400).

3620723328 is an abundant number, since it is smaller than the sum of its proper divisors (7372877472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3620723328 is an equidigital number, since it uses as much as digits as its factorization.

3620723328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061 (or 2037 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 3620723328 is about 60172.4465847949. The cubic root of 3620723328 is about 1535.5540697692.

The spelling of 3620723328 in words is "three billion, six hundred twenty million, seven hundred twenty-three thousand, three hundred twenty-eight".